Zeolite-like metal–organic framework (MOF) encaged Pt(II)-porphyrin for anion-selective sensing

by D. Masih, V. Chernikova, O. Shekhah, M. Eddaoudi, O.F. Mohammed
Year: 2018 DOI: 10.1021/acsami.7b19282

Extra Information

ACS Appl. Mater. Interfaces, Volume 10, Issue 14, Pages 11399–11405, (2018)


The selectivity and sensitivity of sensors are of great interest to the materials chemistry community, and a lot of effort is now devoted to improving these characteristics. More specifically, the selective sensing of anions is one of the largest challenges impeding the sensing-research area due to their similar physical and chemical behaviors. In this work, platinum–metalated porphyrin (Pt(II)TMPyP) was successfully encapsulated in a rho-type zeolite-like metal–organic framework (rho-ZMOF) and applied for anion-selective sensing. The sensing activity and selectivity of the MOF-encaged Pt(II)TMPyP for various anions in aqueous and methanolic media were compared to that of the free (nonencapsulated) Pt(II)TMPyP. While the photoinduced triplet-state electron transfer of Pt(II)TMPyP showed a very low detection limit for anions with no selectivity, the Pt(II)TMPyP encapsulated in the rho-ZMOF framework possessed a unique chemical structure to overcome such limitations. This new approach has the potential for use in other complex sensing applications, including biosensors, which require ion selectivity.



Anion sensing Fluorescence quenching Metalated porphyrin Metal Organic Framework Triplet state